Author Topic: 1976 F100 stepside 4000lb, iron headed 390, solid flat tappet, transbrake, etc  (Read 13992 times)

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bluef100fe

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New video from TNT last weekend, truck leaves violently with the little rented mule engine, very old truck pulling build I did back in 2005-6ish I think, hyperutectic piston, OEM rod with arp bolts, 1U crank, low riser heads, ported with CJ valves, street dominator intake, 4150 carb, custom 2" headers from speedway motors kit, converter is from ultimate converter concepts stalls 4300 with this combo on the Transbrake with throttle wide open and plenty of rear gear ( 4.86) old M/T 13-31 slicks.

Videos:

https://www.facebook.com/tomeighty/videos/502098733247712/

https://www.facebook.com/ladowski/videos/10210750240646555/
« Last Edit: April 25, 2017, 10:29:50 AM by bluef100fe »


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

manofmerc

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Cody what have you done with your rear suspension ? What springs and shocks do you use ?And is your differential bolted down on top of the springs or located on the bottom of the springs like factory .Just curious a fellow racer has a truck like yours and he needs some rear suspension help .Nice photo and leave young man !! I am still getting used to my trans brake in the comet lot different than foot braking it . Keep at it Doug .

gdaddy01

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nice , I like the looks of your truck , even better with the front wheels in the air .

truckguy933

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Awesome truck, I love seeing these heavy iron headed Fe builds scream from some classic home grown port work,

bluef100fe

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Merc,

Best thing I ever did was relocate my shocks behind the rear axle, I actually used all the factory brackets, and used a pair of old front shocks off my truck on the rear (shorter) worked out quite well, the leaf springs are shortened on the back half only, lowers the rear of truck and lets them flex more. That's all I ever had done to the rear until I started using the Transbrake. Then I had to build a adjustable slapper/ladder bar setup which allows the spring to handle the violence of the Transbrake.. hope this helps.


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

machoneman

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Nice!

But Blue, take a slow-mo look at your ride leaving the line. The truck actually jumps sideways a bunch after take-off. Given a good starting line, tires at proper pressure, etc.

I'd venture your springs/shocks/locator (if equipped) are not doing the job. Suggest a close up vid of the truck at take-off from behind or from the rear.  Better would be a go-pro or other camera showing the underside at launch. Any side hop = lost e.t. and worse, side loading can more readily break $$$ stuff!
Bob Maag

thatdarncat

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Cody, the truck is always impressive, you've done a great job. Hope I get to see it in person some day.
Kevin Rolph

1967 Cougar Drag Car ( under constuction )
1966 7 litre Galaxie
1966 Country Squire 390
1966 Cyclone GT 390
1968 Torino GT 390
1972 Gran Torino wagon
1978 Lincoln Mk V

bluef100fe

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Yes that pass wrecked the left main leaf spring, it is sprung now, front half of it has a 1/4 inch gap between it and the rest of the spring pack. I have new springs on order and a plan to reinforce the main leaf so it doesn't happen again. This is the second time over 6 years that the truck has wrecked the main leaf spring, first one I just figured old age original 30 year old spring just gave up but now it wrecked a new spring that was only 3 years old and a limited amount of passes, I will get it fixed and going straight again, and will be adding more power lol.  Darncat, if the planets align, I'm hoping to run drag week this year. Don't you go every year?


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

price5113

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Cody, what has been done to the  front suspension? Have you limited the travel at all? Truck leaves great! Amazing 60' times!!!!!!!!

machoneman

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So Cody, have you considered Cal-Tracs? Heck you could even make your own. Can't think of any racer, Jay Brown included, who doesn't sing their praises as to how well they work.

This type of traction aid would also I think forever solve you main leaf 'bending' issue as with the Cal-Tracs the front of the spring mainly acts as a locater.
Bob Maag

bluef100fe

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Front suspension is old Stock stuff with new bushings, OEM springs are cut some to bring ride height down some with front end of truck gutted, cheap comp engineering 90/10 shocks and I extended the bottom shock mount to limit suspension drop and lift the wheels out of the beams sooner for a better reaction time. I couldn't afford cal tracs when I built the suspension way back when, and now there is just something to be said about building my own stuff and not buying it. Thanks all


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

manofmerc

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Thanks Cody for the information I will pass it on .This past weekend I saw a 71 f100 drag truck his was lowered front and back .With a BIG 460 he was running Low sixes ! (6.16) That was one of the quickest trucks I have ever seen .My 3400 lb. comet just goes 6.77 .You have an awesome truck! Is that a Merkl trans brake ?

Stangman

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Truck goes nice can't believe the air you get on takeoff. Hey I thought you got that big motor from Blair or am I mixing up trucks with someone else

bluef100fe

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Thanks, I didn't have time put big engine back in after ice racing, or change gears for that matter, I think that largely contributed to the wheelie in the video


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

Stangman

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Have you run the big motor at the track yet, if not you must be chomping at the bit. Shit Im excited for ya.